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rk3288:pmic:ricoh619:slove read id error for first time

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张晴
2014-05-13 11:25:07 +08:00
parent e0eac152ee
commit a40cc1f883
1 changed files with 17 additions and 2 deletions
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19
drivers/mfd/ricoh619.c
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@@ -811,6 +811,7 @@ static int ricoh619_i2c_probe(struct i2c_client *client,
struct ricoh619_platform_data *pdata;
int ret;
uint8_t control;
int i=0;
printk("%s,line=%d\n", __func__,__LINE__);
ricoh619 = devm_kzalloc(&client->dev,sizeof(struct ricoh619), GFP_KERNEL);
@@ -824,8 +825,22 @@ static int ricoh619_i2c_probe(struct i2c_client *client,
ret = ricoh619_read(ricoh619->dev, 0x36, &control);
if ((ret <0) || (control < 0) || (control == 0xff) || (control == 0) ){
printk(KERN_INFO "The device is not ricoh619 %08x %d\n",control,ret);
goto err;
if (ret <0){
printk(KERN_INFO "The device is not ricoh619 %08x %d\n",control,ret);
goto err;
}
else{
do{
ret = ricoh619_read(ricoh619->dev, 0x36, &control);
i += 1;
printk(KERN_INFO "##################:read ricoh619 0x36 error retry %08x %d\n",control,ret);
}while( ((control == 0xff) || (control == 0) ) && (i < 10));
if ((control == 0xff) || (control == 0) ){
ret = -ENXIO;
printk(KERN_INFO "##################The device is not ricoh619 %08x %d\n",control,ret);
goto err;
}
}
}
ret = ricoh619_pre_init(ricoh619);